Para-Tek FR™ is PGI’s proprietary Tri-Blend that leverages the benefits of three fibers – High Strength Para-Aramid, Lenzing FR®, and High Tenacity Nylon. The end result is a lightweight, breathable hood that offers exceptional flame and heat resistance and the highest arc rating – 34.4 (Level 3), ounce per ounce of any hood on the market. When tested for vertical char length the Para-Tek FR fabric had the lowest char lengths we’ve ever seen averaging 9mm (.36”) in the wales direction and 12mm (.48”) in the courses direction after five launderings. For comparison purposes, 100% Nomex has more than four times longer char lengths in the wales direction and over three times longer char lengths in the courses direction. Thermal Protective Performance (TPP) results were equally impressive with a TPP rating of 34.8 after five washings. Only the PBI/Lenzing FR blend with our Comfort Plus™ liner – 38 TPP rating, had a better rating. Other properties of Para-Tek FR include: